AR-15 | AR-10
Grid Defense is the first stop for your next AR15 build with our wide variety of barreled upper receivers to choose from. We offer a multitude of options from barrel length, color, handguard designs, and caliber. Whether you are a beginner or experienced gunsmith our uppers are designed to be easy to expand while staying cost friendly. Check out our Upper and Lower parts for everything else you need to complete your build.
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On Sale
Ghost Vital 10.5" Upper 5.56 Nato - Black
Sale: $239.00MSRP: $299.00Ghost Firearms Vital 10.5" Upper - Black Chambered in 5.56 NATO Mil Spec Upper Receiver with Dust Cover and Forward Assist A2 Birdcage Flash Hider 10.5" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas System Ghost Firearms 9'...Sale: $239.00MSRP: $299.00 -
On Sale
Ghost Vital 10.5" Upper .300 Blackout
Sale: $239.00MSRP: $299.00Ghost Vital 10.5".300 Upper Chambered in .300 Blackout (7.62x35) A2 Birdcage Flash Hider 10.5" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System Ghost Firearms 9" M-Lok Free Float Hand...Sale: $239.00MSRP: $299.00 -
On Sale
ALWAYS ARMED 10.5" 5.56 NATO UPPER RECEIVER - BLACK
Sale: $189.00MSRP: $279.00Always Armed 10.5" 5.56 NATO Upper Receiver - Black Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 10.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine Length Gas System .750 Low...Sale: $189.00MSRP: $279.00 -
On Sale
Grid Defense 10.5" 5.56 Flash Can Upper Receiver - Black Anodized
Sale: $329.00MSRP: $399.00Grid Defense 10.5" 5.56 Flash Can Upper Receiver Hard Coat Black Anodized Finish Made in the USA 7075-T6 Mil-Spec Upper Receiver 10.5" 1:7 or 1:8 Twist 4150 M4 Profile Barrel - Black Nitride Chambered in 5.56x45 NATO Carbine Length Gas System .750 Low...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense 10.5" .300 Blackout Flash Can Upper Receiver - Black
Sale: $329.00MSRP: $399.00Grid Defense 10.5" .300 Blackout Flash Can Upper Receiver Hard Coat Black Anodized Finish Made in the USA 7075-T6 Mil-Spec Upper Receiver 10.5" 1:8 Twist 4150 Light HBar Barrel - Black Nitride Chambered in .300 Blackout Pistol Length Gas System ...Sale: $329.00MSRP: $399.00 -
On Sale
Ghost Vital 10.5" 5.56 Pistol Kit
Sale: $419.00MSRP: $479.00Ghost Firearms Vital 10.5" 5.56 Upper - Black Chambered in 5.56x45 NATO (5.56/.223) A2 Birdcage Flash Hider 10.5" 1:7 Twist 4150 M4 Barrel Black Nitride Carbine Length Gas System Ghost Firearms 9" M-Lok Free Float Hand...Sale: $419.00MSRP: $479.00 -
On Sale
Always Armed TR Series 10.5" .300 Blackout Upper Receiver - Black
Sale: $189.00MSRP: $289.0010.5" .300 Blackout Upper Receiver with 10" M-LOK Hand Guard Made in the USA 10.5" 4150 Barrel Chambered in .300 Blackout 1:8 Twist 10" Free Floating Mlok Hand Guard Black Anodized Finish Pistol Length Gas System 5/8x24 Thread Pattern A2 Muzzle...Sale: $189.00MSRP: $289.00 -
On Sale
Ghost Vital 10.5" .300 Blackout Pistol Kit
Sale: $419.00MSRP: $479.00Ghost Firearms Vital 10.5" .300 Blackout Pistol Kit Chambered in .300 Blackout (7.62x35) A2 Birdcage Flash Hider 10.5" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System Ghost Firearms 9" M-Lok Free Float Hand Guard...Sale: $419.00MSRP: $479.00 -
10.5" 5.56 Nato Upper Receiver with 10" MLOK Hand Guard
$289.0010.5" 5.56 Nato Upper Receiver with 10" MLOK Hand Guard Made in the USA 10.5" 4150 Barrel Chambered in 5.56 NATO 10" Free Floating MLOK Hand Guard Black Anodized Finish Carbine Length Gas System A2 Muzzle Device BCG and Charging Handle are NOT...$289.00 -
On Sale
ALWAYS ARMED 10.5" 5.56 NATO BX SERIES UPPER RECEIVER - BLACK ANODIZED
Sale: $189.00MSRP: $279.00ALWAYS ARMED 10.5" 5.56 NATO BX SERIES UPPER RECEIVER Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 10.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine Length Gas System .750...Sale: $189.00MSRP: $279.00 -
Out of stock
Always Armed 10.5" .300 Blackout Upper Receiver with Stainless Steel Barrel and 7" M-Lok Hand Guard
$289.00Always Armed 10.5" .300 Blackout Upper Receiver with Stainless Steel Barrel and 7" M-Lok Hand Guard Hard Coat Black Anodized Finish Chambered in .300 Blackout (7.62x35) A2 Flash Hider 10.5" 1:8 Twist 416R Stainless Steel Light HBar Barrel ...$289.00 -
On Sale
Ghost Firearms 10.5" .300 Blackout Flash Can Upper Receiver Pistol Kit - Black Anodized
Sale: $449.00MSRP: $599.00Ghost Firearms 10.5" Flash Can Upper Receiver Pistol Build Kit Hard Coat Black Anodized Finish Milspec 7075-T6 Upper Receiver 10.5" 1:8 4150 Light HBAR Barrel - Black Nitride Chambered in .300 Blackout (7.62x35) .750 Low Profile Gas Block Pistol Length...Sale: $449.00MSRP: $599.00 -
Out of stock
Ghost Vital Stainless Steel 10.5" Upper .300 Blackout - Black Anodized
$299.00Ghost Firearms Elite 10.5".300 Stainless Steel Upper Receiver Hard Coat Black Anodized Finish Chambered in .300 Blackout (7.62x35) A2 Flash Hider 10.5" 1:8 Twist 416R Stainless Steel Light HBar Barrel Pistol Length Gas System Ghost...$299.00 -
On Sale
ALWAYS ARMED 10.5" .300 BLACKOUT BX SERIES UPPER RECEIVER - BLACK ANODIZED
Sale: $189.00MSRP: $279.00ALWAYS ARMED 10.5" .300 BLACKOUT BX SERIES UPPER RECEIVER Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 10.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas System ...Sale: $189.00MSRP: $279.00 -
On Sale
Ghost Firearms 10.5" 5.56 Flash Can Upper Receiver Pistol Kit - Black Anodized
Sale: $449.00MSRP: $599.00Ghost Firearms 10.5" Flash Can Upper Receiver Pistol Build Kit Hard Coat Black Anodized Finish Milspec 7075-T6 Upper Receiver 10.5" 1:7 4150 M4 Barrel - Black Nitride Chambered in 5.56x45 NATO .750 Low Profile Gas Block Carbine Length Gas System Ghost...Sale: $449.00MSRP: $599.00 -
On Sale
GRID DEFENSE 10.5" 5.56 UPPER RECEIVER - BLACK
Sale: $299.00MSRP: $379.00Grid Defense 10.5" 5.56 Upper Receiver Hard Coat Black Anodized Chambered in 5.56x45 NATO 7075-T6 Milspec Upper Receiver 10.5" 1:7 Twist 4150 Steel M4 Barrel - Black Nitride .750 Low Profile Gas Block Carbine Length Gas System A2 Flash Hider Made in the...Sale: $299.00MSRP: $379.00 -
On Sale
BLEMISHED Ghost Vital 10.5" Upper 5.56 Nato - Black
Sale: $179.00MSRP: $259.00BLEMISHED Ghost Vital 10.5" Upper 5.56 Nato - Black Chambered in 5.56x45 NATO (5.56/.223) A2 Birdcage Flash Hider 10.5" 1:7 Twist 4150 M4 Barrel Black Nitride Carbine Length Gas System Ghost Firearms 9" M-Lok Free Float...Sale: $179.00MSRP: $259.00 -
On Sale
ALWAYS ARMED 10.5" 5.56 NATO PISTOL KIT - BLACK ANODIZED
Sale: $339.00MSRP: $479.00Always Armed 10.5" 5.56 NATO Pistol Kit - Black Anodized Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 10.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine Length Gas System .750...Sale: $339.00MSRP: $479.00 -
Out of stockOn Sale
Andro Corp 10.5" 5.56 Front Sight Upper Receiver - Black
Sale: $180.00MSRP: $429.00Andro Corp 10.5" 5.56 Front Sight Upper Receiver - Black Made in the USA 10.5" 5.56 NATO Barrel 1:8 Twist Rate 1/2x28 TPI Thread Pitch 7075-T6 Mil-Spec Upper Receiver M4 Handguard Carbine Length Gas System A2 Muzzle Device Black Anodized Mil...Sale: $180.00MSRP: $429.00 -
On Sale
ALWAYS ARMED 10.5" 7.62X39 BX SERIES UPPER RECEIVER - BLACK ANODIZED
Sale: $189.00MSRP: $279.00ALWAYS ARMED 10.5" 7.62X39 BX SERIES UPPER RECEIVER Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 10.5" 1:10 Twist 4150 Barrel with Black Nitride Finish Chambered in 7.62X39 Carbine Length Gas System .750 Low...Sale: $189.00MSRP: $279.00